package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Resource
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端传过来的明文进行MD5加密处理
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增用户
     *
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //属性复制
        BeanUtils.copyProperties(employeeDTO, employee);
        //补充其他属性
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        employee.setStatus(StatusConstant.ENABLE);

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.save(employee);
    }

    /**
     * 分页查询
     *
     * @param dto
     */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO dto) {
        int page = dto.getPage();
        int pageSize = dto.getPageSize();
        if (page <= 0) {
            page = 1;
        }
        if (pageSize <= 0) {
            pageSize = 10;
        }
        //开始分页
        PageHelper.startPage(page, pageSize);
        Page<Employee> p = employeeMapper.pageQuery2(dto);
        List<Employee> records = p.getResult();
        long total = p.getTotal();
        return new PageResult(total, records);
    }
    /**
     * int page = dto.getPage();
     *         int pageSize = dto.getPageSize();
     *         String name = dto.getName();
     *         if (page <= 0) {
     *             page = 1;
     *         }
     *         if (pageSize <= 0) {
     *             pageSize = 10;
     *         }
     *         int start = (page - 1) * pageSize;
     *         int count = employeeMapper.count();
     *         List<Employee> employeeList = employeeMapper.pageQuery(start, name, pageSize);
     *         PageResult result = PageResult.builder()
     *                 .records(employeeList)
     *                 .total(count)
     *                 .build();
     *         return result;
     */

    /**
     * 启用、禁用员工账号
     */
    @Override
    public void startOrStop(int status, Long id) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .build();
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }

    /**
     * 编辑员工页面回显
     */
    @Override
    public Employee getById(Integer id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("******");
        return employee;
    }

    /**
     * 编辑员工
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }
}
